mirror of
https://github.com/josdejong/mathjs.git
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68 lines
2.1 KiB
JavaScript
68 lines
2.1 KiB
JavaScript
var assert = require('assert'),
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error = require('../../../lib/error/index'),
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math = require('../../../index'),
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string = math.string;
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describe('string', function() {
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it('should be \'\' if called with no argument', function() {
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assert.equal(string(), '');
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});
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it('should convert a boolean to a string', function() {
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assert.equal(string(true), 'true');
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assert.equal(string(false), 'false');
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});
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it('should convert null to a string', function() {
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assert.equal(string(null), 'null');
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});
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it('should be the identity if called with a string', function() {
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assert.equal(string('hello'), 'hello');
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assert.equal(string(''), '');
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assert.equal(string(' '), ' ');
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});
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it('should convert the elements of an array to strings', function() {
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assert.deepEqual(string([[2,true],['hi',null]]), [['2', 'true'],['hi', 'null']]);
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});
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it('should convert the elements of a matrix to strings', function() {
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assert.deepEqual(string(math.matrix([[2,true],['hi',null]])),
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math.matrix([['2', 'true'],['hi', 'null']]));
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});
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it('should convert a number to string', function() {
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assert.equal(string(1/8), '0.125');
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assert.equal(string(2.1e-3), '0.0021');
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assert.equal(string(123456789), '1.23456789e+8');
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assert.equal(string(2000000), '2e+6');
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});
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it('should convert a bignumber to string', function() {
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assert.equal(string(math.bignumber('2.3e+500')), '2.3e+500');
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});
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it('should convert a complex number to string', function() {
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assert.equal(string(math.complex(2,3)), '2 + 3i');
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});
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it('should convert a unit to string', function() {
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assert.equal(string(math.unit('5cm')), '50 mm');
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});
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it('should throw an error if called with wrong number of arguments', function() {
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assert.throws(function () {string(1,2)}, error.ArgumentsError);
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assert.throws(function () {string(1,2,3)}, error.ArgumentsError);
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});
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it('should LaTeX string', function () {
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var expr1 = math.parse('string()');
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var expr2 = math.parse('string(bla)');
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assert.equal(expr1.toTex(), '""');
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assert.equal(expr2.toTex(), '"bla"');
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});
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});
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